The work (Jili) done by any nonconservative Lailas i öä) on a particle moving through an losed path (älio shus) is always zero."

Q: a block with mass m=20 kg pulled on horizontal surface , bulled by external force by 1000 N as shown…

A: Frictional force=μmg where μ=coefficient of friction m=mass of body Work done by force=F.X where…

Q: What is the work done by a 2500 kg car whose velocity is 85 km/hr? Round your answer to the nearest…

A: Given value--- mass = 2500 kg. Final velocity = 85 km/h. We have to find--- work done?

Q: How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp equals 746 W) to…

A: Use work energy theorem

Q: Does a larger net force always produce a larger change inkinetic energy than a smaller net force?…

A: By work-energy theorem, change in kinetic energy is equal to the work done.

Q: A load of 120 kg is pulled up by 6 m. Find the work done?

A: Given data,   Mass , m  =  120 kg   Height , h  =  6 m   Acceleration due to gravity, g  = 9.8 m/s2…

Q: Calculate the work done by the force during the first

A: Apply work energy theorem

Q: thou a displa Is pusned norizontal Newtons. Non-conservative forces (friction) remove 14 Joule stem.…

A: Given values:- Displacement,(d)=3 m -----(1) Force,(F)=89 N -----(2) Non-conservative forces work…

Q: A worker pushes horizontally on a large crate with a force of 250 N, and the crate is moved 3.0 m.…

A: Given that the force applied by the worker on the crate is F =250 N. The distance moved by the crate…

Q: A lawn roller has been pushed by a gardener hrough a distance of 30 m. What will be the work done by…

A: Work is done when a force acts upon an object to cause a displacement.  Here, we  calculate the…

Q: Find the work done by a force of constant magnitude F=0,1KN.If the displacement of the body is…

A: Given data: Force, F=0.1 kN = 100 N Displacement, r=100 mm =100×10-3 m = 0.1 m Angle between…

Q: Suppose you are jogging at constant velocity. Are you doing any work on the environment and vice…

A: To determine Work Done

Q: The work done on an object moving parallel to the force acting on it is: O OJ O at maximum O…

A:

Q: A 50lb is lifted, at a constant rate, to a height of 10 feetfrom the ground. Compute the work…

A:

Q: An object in a horizontal surface was moved by applying a constant force (in Newtons), F= 80i + 5j.…

A: Force (F→) = 80i^ + 5j^ Ndisplacement (d→) = 9 i^ m

Q: A block of mass m is pushed at constant speed over the horizontal ground. If the kinetic friction…

A: Given data, Mass of the block = m displacement = s coefficient of kinetic friction=μ

Q: A 4000-kg elevator starts from rest accelerates uniformly to a constant speed of 2 m/s and…

A: Mass, m = 4000 kg Initial speed, u = 2 m/s Distance above its initial position, h = 20 m Work done,…

Q: A wagon extertéd on the handle at angle of 45° with the hovi tal. If the pulled ina Circle of radius…

A: Given: The force is F=40 N. The angle is θ=45°.The radius is r=25 m. The time is t=20 s. The…

Q: A crate of mass 40 kg is pushed along a floor with a force of 20 N for a distance of 10 m.Calculate…

A: Given data :              Distance    =    d              Force     =   F      To find :…

Q: In the question given as follows, determine the work done by the constant force :-   The locomotive…

A: Given,  massm=7 tons=7000 kg displacement (d)=0.25 mile=402.336 m

Q: What is the work done by the force 2xi + 3yj from 3,1 to 3,2?

A:

Q: Discuss the work- energy theorem.

A: Motion is relative as it differs in different scenario. Attributes like velocity, displacement, etc…

Q: A man pushes a lawn mower on a level lawn with a force of 200N. If only 60% of the totalapplied…

A: Given information: The force on the lawn rover (F) = 200 N The fraction of force used in the…

Q: nat is the work done by a 2500 kg car whose velocity is 85 km/hr? und your answer to the nearest…

A: Given value--- mass = 2500 kg. final velocity = 85 km/h. We have to find--- work done

Q: If the ball is dropped with an initial potential energy of 19800J what would be its maximun kinetic…

A: Solution: According to the conservation of energy, total energy of the ball is constant. Hence,…

Q: A body of mass m slides a distance d down alom uch work is done by gravity?

A: We know that the let the mass of the body is m and it slide a distance d in the downward direction…

Q: A 50 kg sack of rice was raised to height of 1.2 meter by the delivery boy to the car’s roof, find…

A:

Q: When a punter kicks a football, is he doing any work on theball while the toe of his foot is in…

A: The punter can only be applying a force when he is in contact with the football. Therefore the…

Q: A crate of mass 85 kg is pushed along a floor with a force of 20 N for a distance of 8 m. Calculate…

A: Given data :    Force  =  F    Distance  =  d        To find :        Work done

Q: An object of mass 2 kg falls from a height of 5 m under the influence of the force of Earth's…

A:

Q: Find the work done to displace body of mass by 3 kg with force of 1.3 N upto 2 m

A: Mass of the body, m=3 kg Force on the object, F=1.3 N Displacement of the body, d=2m

Q: When a driver applies the brakes to keep a car going downhill at constant speed and constant kinetic…

A:

Q: How much energy in terms of U is stored when spring is compress twice as much?

A: Given information: The compression in the spring = x0 The potential energy stored in the spring = U0

Q: A crate of mass 80 kg is pushed along a floor with a force of 30 N for a distance of 10 m. Calculate…

A: GivenMass of the carte (m) = 80 kgForce (F) = 30 NDistance (d) = 10 m

Q: A 380-kg piano slic from accelerating E llel to the incline (F ted by the man, - done by the man o…

A: We know tha the we have given that the mass of the piano is m and it slide from d =  3.9 m down with…

Q: uppose you fire a mass m straight vertically upwards from a spring that is knc compressed a distance…

A: Given:-  Suppose you fire a mass m straight vertically upwards from a spring that is known to have…

Q: A 4 kg particle has an initial velocity of (6i-3j) m/s. Some time later, its velocity changes to…

A:

Q: Show complete solution. Do not round off. What work is done on a level track in bringing the…

A:

Q: A crate of mass 80 kg is pushed along a floor with a force of 40 N for a distance of 10 m. Calculate…

A: Given, Mass=80kg Force=40N Distance=10m

Q: The spring is now compressed so that the unconstrained er x = L. Using the work integral

A: We know that the formula of the spring force is given as  F = -kx where k is the spring constant. x…

Q: A catle exertsa constant upward tension of magnitude 2.22 10N on 200 x 10 kg elevator es thmugh a…

A:

Q: If a block isnloaded with two 0.5 kg masses, with the spring pulling it at 30° above the horizontal,…

A:

Q: When you apply force F = 273N to the right to mave a box by the distance 4.2 m to the right, find…

A: Given Force =273 N  Displaced distance d 4.2m

Q: A crate of mass 34 kg is pushed along a floor with a force of 32.05 N for a distance of 62.01 m.…

A: Introduction :  In this question we are provided it value of distance and force . With these data we…

Q: The work done on an object moving perpendicular to the force acting on it is: O OJ at maximum O…

A: Work is defined as the scalar product of force and displacement. That is,  W=F→.d→ ⇒W= Fdcosθ Where…

Q: 2.5 F est across a floor at the rate of 2.01m/s- for 8.5s. Find the net work done on the box.

A: Work done = Force × Displacement  If force and displacement are in same direction

Q: ) How much work is done when a 50N a Floor pushed along distance 10 m?

A: Given data :- Force F = 50 N displacement d = 10 m

Q: Find out the work done when a force done of 20N displaces a body through 8m in the direction of the…

A: Write the expression for the work done.

Q: A crate of mass 45 kg is pushed along a floor with a force of 130 N for a distance of 46 m.…

A: Introduction :  In this question we are provided with value of  distance and force . with these data…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.