A 10-m long homogenous beam with a weight of 50N is divided into 10 equal parts (1 m each) as shown in figure. If the system is in static equilibrium, what is the weight of the ball 1 (W1)? W1 W2 = 20N W3 = 10N %3D %3D 10 N 40 N O 2.5 N 15 N 80 N

Q: A 2-kg object is thrown upwards with an initial velocity of 16 m/s. At the peak of the trajectory,…

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Q: A 500000 g roller coaster car traveling at 30 m/s is stopped by a spring with a spring constant of…

A: Given Mass of roller coaster car = m = 500000 g Speed of car before collision = u = 30 m/s Spring…

Q: State which of the following statements are true and which are false. Give reasons for your answers.…

A: Given : Five statements are given and asked to state whether true or false.

Q: 6. In the figure below, the converging lens has a focal length of 10.0 cm and the concave mirror has…

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Q: A ball is launched with an initial speed of 30 m/s making an angle of 45° above the horizontal. How…

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Q: The bronze bar 3.05 m long with a cross-sectional area of 577 mm2 is placed between two rigid walls.…

A: Length of wire L = 3.05 m Constant α = 18×10-6/°C = 1.8×10-5/°C Compressive Stress P = 33.81 MPa =…

Q: In a perfectly ELASTIC collision between two perfectly rigid objects the momentum of the system is…

A: elastic energy conserves both kinetic energy and momentum of the system

Q: On absorption of a single neutron, plutonium Pu-239 can undergo fission into xenon Xe-134 plus…

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Q: A good-quality measuring tape can be off by 0.50 cm over a distance of 20 m. What is its percent…

A: The % uncertainty can be determined by the ratio of uncertainty and total measured value.  Given,…

Q: A soldier rides on his horse slowly along a 12 m long drawbridge that passes over a canal as shown…

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Q: 4.0-N force (directed at a 35° angle to the vertical) to move a 475-gram box a horizontal distance…

A: Given:-  The force  F= 4.0 N  The angle to the vertical θ = 35o The horizontal distance d =378 cm =…

Q: Two narrow slits are 3.60 m apart and 35.0 cm from a screen. What is the distance between the first…

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Q: Whale and Kanmuro are two islands located at the Chimera archipelago. These two are separated by a…

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Q: Find density of object of mass 280 kg which accupies space of 5 m3 ?

A: Given data :                        Volume     =     v                         Mass        =     m…

Q: A 15 kg stone slides down a snow-covered hill as shown in the diagram below. It leaves point A with…

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Q: A ball is launched with an initial speed of 30 m/s making an angle of 45° above the horizontal. How…

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Q: The figure shows a wood cylinder of mass m = 0.229 kg and length L = 0.0930 m, with N = 24.0 turns…

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Q: A 50.0 cm long spring with spring constant 237 N/m has a mass 1.8 kg attached to it, and it can…

A: Given: The resting length of the spring: x0 = 50.0 cm. The spring constant: k = 237 N/m. The mass…

Q: A car starts out from rest at the location x= 0 m and accelerates. At the moment it passes the…

A: Given:A start from rest and acceleratesSpeed is 14 m/s at distance 280 m and at Green parkCar stays…

Q: Question 36 If an object of mass 0.8 kg has an acceleration of 70 m/s, what is the unbalanced force…

A: Mass of object (m) = 0.8 kg  Acceleration of object (a) = 70 m/s2

Q: You push on a rectangular door at the location of the knob (see diagram for top view). The door s…

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Q: Q3:- A convex lens with a focal length of (8 cm), an object of (4 cm) height is placed in front of…

A: we use real is positive sign convention

Q: 5. Calculate the minimum thickness of a soap-bubble film that results in constructive interference…

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Q: R A 50 cm long metal rod moves along the two rails in a plane of the circuit shown and is placed…

A: Given that- Rod length =50cm=0.50m B=0.15T R=3.0ohm Uniform speed(v) =2.0m/sec To determined that…

Q: 1. For the 3500-lb car, determine (a) its mass in slugs, (b) its weight in newtons, and (c) its mass…

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Q: 1. The velocity of an alpha particle, He?, with mass m = 6.64×10-27kg changes from u1 = (-0.30,…

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Q: (a)Particles called r-mesons are created by accelerator beams. If these particles travel at 2.49 x…

A: Given   Speed of particles , v = 2.49×108 m/s  Time , ∆to = 2.60×10-8 s  Relativistic factor , Y =…

Q: in a collision, if momentum is conserved then so is mechanical (kinetic) energy, in all cases T or…

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Q: 1. A concave mirror forms an inverted image three times larger than the object. Find the focal…

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Q: 2. A large magnet is shown. (The north and south poles of the magnet are not shown.) A student…

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Q: How much energy is required to completely melt 5.00 kg of gold which is initially at room…

A: energy required = energy to raise temperature+ energy to melt Q=mc∆t+mL

Q: This object is located 5.4 cm to the left of the lens, and the image forms at 24.8 cm to the right…

A: Given: The location of the object is 5.4 cm in front of the lens. The location of the image is 24.8…

Q: Practice Problems (2) Calculate: core/cladding interface The angle of refraction at the air/core…

A: Snell's law states that the ratio of the sine of the angles of incidence and refraction is…

Q: An object 0.858 cm tall is placed 15.0 cm to the left of a concave spherical mirror having a radius…

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Q: Solar transmittance through glazing depends on the angle of incidence of solar energy on the…

A: More heat will produce if light will fall normally to surface.

Q: the inside and outside surfaces of a hubcap that is a section of a sphere. When he looks into one…

A: Solution

Q: 2.

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Q: When a baseball bounces on the ground it leaves the surface with the same speed that it impacted the…

A: i As it is an inelastic collision, it does not leave the surface with the same speed that it…

Q: At a carnival booth, you win a stuffed animal if you can toss a ball into dish which is on a shelf…

A: a). The height of the shelf above the point where the ball leaves your hand is 1.52 m b). the…

Q: ve instantaneous current of e/2 per second? Explain

A: Given :-  Is it possible to have an instantaneous current of e/2 per second?  Explanation:-  We know…

Q: Estimate the time needed for a glycine molecule  to diffuse a distance of 27 μmμm in water at 20…

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Q: In the figure a uniform electric field is directed out of the page within a circular region of…

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Q: A red laser has a wavelength of 400 nm, and a maximum electric field of 50,000 N/C. If this laser is…

A: Given : Wavelength of red laser, λ = 400 nm Maximum electric field, Emax = 50,000 N/C

Q: An interstellar spaceship with rest length ?rest = 58.0 m is passing a planet at speed ? = 2.31 ×…

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Q: A block of mass 1.99 kg is placed on a frictionless floor and initially pushed northward, whereupon…

A: by conservation of momentum for first collision…

Q: (a) What frequency is received by a person watching an oncoming ambulance moving at 115 km/h and…

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Q: What is the force of a 35 kg object that falls from the sky and hits the ground, without air…

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Q: a) If the power output of a 640 kHz radio station is 54.0 kw, how many photons per second are…

A: a) The Radio station broadcasts at 54 kW=54000J/s. The frequency of the signal  is 640kHz=640×103Hz…

Q: You push on a rectangular door at the location of the knob (see diagram for top view). The door s…

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Q: 1. Compute the resistance of a hardened copper rod 2 meters long and 8 mm in diameter if the…

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Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics. 

Equilibrium of Forces

The tension created on one body during push or pull is known as force.