A book is being pushed across a horizontal table. Does the normal force pushing up on the book do any work on it?

Q: What is the work done by the force pulling a block 1 meter with two 0.5 kg masses on it?

A: We know, Workdone=Force ×displacement

Q: A spring is stretched vertically by a suspended object having a mass of 0.55 kg. How much work is…

A: mass, m = 0.55 kg  stretch, y = 3cm

Q: A man pushes a cart with a constant force of 200 N at an angle 30° above the horizontal. If he does…

A: given applied force on cart F = 200 N at an angle 300 above the horizontal. hence Horizontal force…

Q: While rearranging a dorm room, a student does 400 J of work in moving a desk 2.0m. What was the…

A: Workdone, W = 400 J Displacement, d = 2 m Magnitude of the applied horizontal force, = ?

Q: A child pulls a wagon along level ground by exerting a force of 20 pounds on a handle that makes an…

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Q: A force of F = 159 N pulls a mass of 15 kg a distance of x = 4.8 m. How much work is done by the…

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Q: At a playground, a 22 kg child plays on a slide that drops through a height of 2.3 m . The child…

A: From conservation of energy , the change in mechanical energy is equal to the non-conservative work…

Q: At a playground, a 19-kg child plays on a slide that drops through a height of 2.3 m. The child…

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Q: If you pull a 9 kg mass vertically up 1.6 m at constant velocity, how much work do you do?

A: Given Mass= 9[kg] Height to which the mass is pulled up vertically= 1.6[m]  Work is said to be done…

Q: A person lifts a 25 kg box of old sports equipment at an angle of 75 degrees to the vertical to a…

A: Mass of box (m) = 25 kg Angle to the vertical (θ) = 75 degree Height above the ground (h)= 2.6 m

Q: An apple weighing 1 N falls throughas a distance of 1 m. How much work is done on the apple by the…

A: weight of apple(W)= 1N Distance(d)=1m Work done=F.d=Fdcosθ F is force θ is angle between force and…

Q: A force of F = 151 N pulls a mass of 15 kg a distance of x = 3.3 m. How much work is done by the…

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Q: How much work is required to throw a ball with a mass of 0.27 kg 30.4 m/s? Assume the ball starts…

A: Work done = change in K.E Work done = (K.E)f -(K.E)i                   = 1/2mvf2-1/2mvi2…

Q: How much work is it to lift a 25  kg sack of cement vertically 4.3 m?

A: Given data:  Mass (m) = 25 kg Height (h) = 4.3 m Required: Work done (W)

Q: Why is it that the work done in holding a bag w above the floor is 0?

A: GivenF=1 N1 m above the floor

Q: A sport car of mass 1.2 t is accelerating at 6.0 m/s^2. How much work is done by the resultant force…

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Q: As an object moves from point A to point B only two forces act on it: one force is nonconservative…

A: The work done by non-conservative is responsible for the mechanical energy of system. When work done…

Q: Ahmed carrying a weight of 50 N walks a distance of 2m as shown in figure. The work done by him is…

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Q: A ball of 0.1 kg is dropped from rest. When it falls through a distance of 2 m, the work done by the…

A: The expression for work done is, W=F×d                                    F=force,d=dispalcement…

Q: A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction is…

A: Answer Given  Mass m = 60 kg Height h = 50 m Work done W = -6 kJ = -6×10-3 J According to the…

Q: A bodybuilder lifts a 150 kg barbell to a height of 3.0 m.  What is the work done by the bodybuilder…

A: The potential energy is given by  U = m g h  where, m is the mass,  g is the gravity and h is the…

Q: A weight lifter holds 900 N over his head .is he doing work on the weights?

A: Given, Force = 900 N

Q: You push your much-loved 3-kg physics book 1.01 m along a horizontal table top with a horizontal…

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Q: How much work is done by a table as it holds up a 3.8 kg cat? O OJ O 3.8J O 37J O The answer depends…

A: Given Mass m of cat = 3.8 kg gravitation acceleration g = 9.8 m/s2

Q: A 2 kg object slides across a horizontal surface with an initial speed of 6.53 m/s. If the object…

A: Given- Mass of object m= 2kg Initial velocity v=6.53 m/s

Q: Why is it tiring to push hard against a solid wall even if no work is done? A 75 kg firefighter…

A: Q 1) We get tired because we use our energy to contract the muscles. We try to push the wall using…

Q: A ball was launched upwards and vertically at a speed 3 m/s up to a height 4 m. What the work done…

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Q: How much work is done by a table as it holds up a 3.8 kg cat? Your answer: O OJ 3.8 J 37 J The…

A: The work done to hold up a cat on the table is the potential energy due to the gravitational force.…

Q: A worker pushes horizontally on a large crate with a force of 195 N, and the crate is moved 4.0 m.…

A: Given data: The applied force is F=195 N. The distance moved is s=4 m.

Q: A 6.0 kg box slides a 12 m distance on ice. If the coefficient of friction is 0.21, what is the work…

A: Given data: Mass (m) = 6.0 kg Distance (s) = 12 m Coefficient of friction (μ) = 0.21 Required: Work…

Q: A worker pushes horizontally on a large crate with a force of 140 N, and the crate is moved 3.1 m.…

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Q: A 5.3 kg textbook is raised a distance of 35.2 cm as a student prepares to leave for school. How…

A: GivenMass m = 5.3 kgHeight h = 35.2 cm = 0.352 m

Q: A child drags a toy behind him on the ground. The coefficient of friction is 0.44 and the toy is…

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Q: You push your much-loved 3-kg physics book 1.25 m along a horizontal table top with a horizontal…

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Q: You lift a 3kg pumpkin to a height of 0.80 m to check it out. How much work do you do on the pumpkin…

A: Mass of pumpkin m=3 kg The height to which the pumpkin is lifted h=0.80 m The acceleration due to…

Q: A body having 7 kg of mass moves with a velocity of 20 m/s covers a vertical height of 8.75 m. What…

A: Given data:  Mass, m = 7kg   velocity, v = 20m/s   Height, h = 8.75m   g = 10m/s2

Q: A man pushes a lawn mower on a level lawn with a force of 194 N. If 49% of this force is directed…

A: Consider a man applied force F on a lawnmower and it displaces by a distance d.

Q: You push a heavy box along the floor with a force of 775 N for a distance of 15 meters.  The…

A:

Q: A 10 kg barbell is rolling down a hill. There is no friction or air resistance acting on it, only…

A: Mass of the barbell is m = 10 kg Initial speed is u = 2 m/s Final speed is v = 7 m/s The only force…

Q: If you push a car with a force of 600 N on a level driveway for 15 m, how much work do you do on…

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Q: While carrying a 20 N box, a 500 N girl runs up the staircase to a 5 m higher. What is the work done…

A: Given data The weight of the box is given as Fwb = 20 N. The weight of the girl is given as Fwg =…

Q: Why does the force of gravity does no work on a car that rolls down a hill but no work when it rolls…

A: Actually there is a small mistake in the given question. The question is the force of gravity does…

Q: A horse pulls a cart with a force of 0.2 kN at an angle of 27 degrees with the horizontal and moves…

A: Work done on a body can be said to happen when due to the force applied on the body, there is a…

Q: A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force…

A: Work done is defined as force into displacement Work done = F × S Cosθ

Q: A concrete block is pulled 4.7 m to the right across a smooth surface. The tension in the rope is…

A: Given data:  Distance (d) = 4.7 m Tension force (F) = 125.6 N Angle (θ) = 44.5° Required: The net…

Q: Why does one get tired when pushing against a stationary wall when no work is done on the wall?

A: Work done can be calculated as the product of the displacement and the force applied.