When an automobile is travelling at 60 km/hr, its engine is developing 25 hp. (a) Find the total resisting force in newtons. (b) Assuming that the resisting force is directly proportional to the speed, what horsepower must the engine develop to drive the automobile at 100km/hr?

Q: sider two systems A and B. System A contains 3000 kJ energy at 20oC, whereas system B contains 200…

A: To determine the direction of heat transfer when they are brought in contact with each other.

Q: luid Mechanics A solid spherical ball has a radius of 50 cm and total mass of 400 kg. If it’s drop…

A: To obtain the time for the ball to reach the ground in the lake, we must first calculate the…

Q: In potential energy of springs , the Datum must be Select one : A) Minimum gravity force B) Second…

A: POTENTIAL ENERGY = IT IS THE ENERGY THAT IS STORED DUE TO CHANGE IN  THE POSITION OF THE PART OF THE…

Q: 13 KN 82 KN/m 3.885 m 3.885 m A 7.77 m 6.39 m

A: given; ⇒reaction force at A =RA⇒reaction force at B =RB⇒load intensity(w)=82KN/m⇒force(F)=13Kn

Q: While 50 kJ of heat is input to the closed system, a 5 kN.m work input occurs with a mixer placed in…

A: Given data: Write the expression to calculate the final internal energy of the system.

Q: Calculate the work done (W) when heat (Q) supplied to a system is 100 Joules and change in internal…

A:

Q: A car starting from rest is accelerated at the rate of 0.33 m/s2. Find the distance covered by the…

A: There are two types of accelerations that are acting on a circular surface. One type of acceleration…

Q: A lift in a hotel carries six people with a mass of 750 kg and a total mass of 450 kg. How many…

A: Given data: The mass of all six people in the elevator is; m1 = 750 kg. The mass of the elevator…

Q: The volume and temperature of a gas at the beginning of expansion are 0.0056m3 and 183°C,…

A:

Q: What is the weight of a block of ice 24 in. by 24 in. , if ice weighs 92 percent as much as water,…

A: Given:dimension of ice block=24 in×24 involume of ice, V=243 in3water weight=62.5 lb/ft3Ice…

Q: A 5.0 g bullet traveling at 360 m/s penetrates a 25 cm thick perpendicular board and exits with a…

A:

Q: find the height of a tree if the angle of its elevation of its top changes from 20° to 40° as the…

A: Given Data : Angle of its elevation of its top changes from 20° to 40° as the observer advances 23m…

Q: If a force of 3400 pounds is applied to a circular piston 2 inches in diameter, calculate the fluid…

A:

Q: What is non-impulsive forces?

A: An impulsive force can be defined as the very large force acting for an infinitesimally short period…

Q: (2) lubäi The difference between shear strain and linear strain Linear Strain is change in…

A:

Q: The force developed in the brake cylinder is 2.74 KN and the diameter of the cylinder is 4.5 cm. If…

A: Option d is correct

Q: 2.) If the work required to stretch a spring 1 ft beyond its natural length is 12 ft-lb, how much…

A: Given Data :- w=12ft-lb a= 12ft

Q: Two pistons of a hydraulic lift have diameters of 60 cm and 5 cm. Determine the force exerted by the…

A:

Q: he mechanical efficiency of a machine is defined as the ratio of the output of useful power produced…

A: Efficiency is a measure of how much of the work you do really goes toward moving the item you're…

Q: circular cylinder of 20 cm diameter and 120 cm long contains watr up to a height of 80 cm. It is…

A:

Q: The Diameters of a small piston and a large piston of a hydraulic jack are 15 cm ad 30 cm…

A: Pressure = Force / Area   From Pascal's law pressure is same at same level of liquid.

Q: Following table shows observations on a certain machine.   LOAD EFFORT 100 N 10 N 200 N 14 N Find…

A: Given, LOAD EFFORT W1=100 N P1=10 N W2=200 N P2=14 N

Q: Q2/ A conservative force F, = (9x3 + 7x? + 2x + 1)N ,acts on a 6 kg body ,as the body moves along…

A: Condition of Conservative work Work done by the force is independent of the path of the object its…

Q: An automobile lift raises a car weighing 3000 lbf, 6 ft off the shop floor (Fig. 2-12). Assuming the…

A: Weight of the car, Wcar= 3000 lbf Weight of the lift, Wlift= 500 lbf Distance to be moved off the…

Q: A block of wood is compressed 2.00 nm when inward forces of magnitude 138 N are applied to it on two…

A:

Q: 1. What is a net force? 2. What is an unbalanced force?

A: 1. Net Force: When the multiple force acting or passing through a single point of a body or…

Q: The large piston in a hydraulic lift has a radius of 250 cm2 .What force (kgf) must be applied to…

A: Using Pascal's law of pressure  in fluid mechanics

Q: Calculate the amount of energy heated from -5 C to 110 C a. 0.04m^3 oil  b. 0.02m^3 aluminum  c.…

A: Given, T1 = -50C T2 = 1100C

Q: A bottle with a lid contains 0.0083kg of air at 64°C. If the volume of the air inside

A:

Q: pressure cooker containing some water has an internal energy of 300 kJ. If 0.5 kg of steam with an…

A: given; ⇒internal energy (u)=300KJ⇒mass of steam (m)=0.5Kg⇒with enthalpy (h)=1800KJ/kg⇒necessary work…

Q: Action and Reaction forces _____. Choose the right answer.   a. act on the same body.   b. are not…

A: .Action and Reaction forces _____. Choose the right answer.   a. act on the same body.…

Q: A 80 m high vertical column of a fluid of density 1600 kg/m3 exists in a place where g = 9.88 m/s2.…

A: given data-  height of the column h = 80m density of the fluid ρ =1600 kg/cu.m g = 9.88 m/s2 to…

Q: When calculating work done by forces, the work of an internal force does not have to be considered…

A: In order to move a body through a certain distance, some amount of energy is required. This energy…

Q: Two point masses m and M are separated by a distance d. If the separation d remains fixed and the…

A:

Q: Convert the moment of a force M = 80 lb·in into SI units, which should be in N·m. Note: 1 lb of…

A:

Q: Calculate the work done (W) when heat (Q) supplied to a system is 100 Joules and change in internal…

A:

Q: A bucket of concrete of the total mass 200 kg is raised by a crane with an acceleration of 2 m/s2…

A: Given data: The mass of a concrete bucket, mb = 200 kg. Acceleration due to crane, ac = 2 m/s2. The…

Q: Each blade on a rotating airplane propeller is like a long, thin rod. If each blade were stretched…

A: Write the relation in initial length and final length of blade. lf=2li   Write the relation in…

Q: A spring exerts a force of 17 lbf on a piston inside a piston cylinder device. The mass of the…

A: Pressure inside the piston cylinder, P= 944444.44 lb/ft^2

Q: Two forces equal in magnitude and opposite in direction, acting on an object at two different…

A: Given:F1=F2=8 N

Q: If you know the direction of the weight force, will you know the direction of the normal force?

A: Given: Normal force is N Weight force is W

Q: The horizontal component of Force F1 (unit is in N), H1= The vertical component of Force F1 (unit is…

A: …

Q: Given is a triangular shape that has a hole in it of radius ? = 15 ??. The triangular shape is 10 cm…

A:

Q: A 2.5 N weight has a kinetic energy 1.75 J. Determine its velocity in kph.

A:

Q: When does a non-impulsive forces occur?

A: When the force is acted upon a body for considerable amount of time then that force is referred as…

Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.