A crane is used to hoist a steel girder up to the top of a sky-scraper under construction. The girder weighs 2,755 lb and has a Fw of 12,260 N.  . The crane lifts it to the top of the 48thfloor 175.6 m.  How much work is done to lift the girder that far? State your answer in MJ.

Q: The loaded cab of an elevator has a mass of 2.80 × 10³ kg and moves 181. m up the shaft in 22.0 s at…

A:

Q: The cable of a crane is lifting a 750 kgkg girder. The girder increases its speed from 0.25 m/sm/s…

A: Given:         Mass(m) = 750 kg        Initial speed(u) = 0.25 m/s       Final speed(v) = 1.25 m/s…

Q: A 287-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 17.1°…

A: Given  M = 287 kg  Coefficient of kinetic friction, u = 0.253  Force P makes angle 17.1 °   What is…

Q: A 2400-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 3.00 m…

A:

Q: A 2,400-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 4.80 m…

A: GIVEN:- Mass of pile driver = 2400 kg Hight by which pile driver falls before coming into contact…

Q: A 2,200-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 3.40 m…

A:

Q: A 12m long post is bolted to the wall on its left end. Its right end is held horizontal by a wire…

A: Consider the mass of the post be m, the weight of the post be w, the tension in the wire be T, the…

Q: Starting from rest, a 5.40-kg block slides 2.60 m down a rough 30.0° incline. The coefficient of…

A:

Q: A 2400-kg pile driver is used to drive a steel beam Into the ground. The pile driver falls 6.00 m…

A: mass of pile driver (m) = 2400 kg Height of pile driver before coming in contact with top of beam…

Q: The loaded cab of an elevator has a mass of 3.20 × 10° kg and moves 187. m up the shaft in 25.0 s at…

A:

Q: A contractor lifts beams (985 kg) 52 m using a 10 hp-rated crane. Convert 10 hp to Watts (use 1 hp =…

A: mass of beam (m) = 985 kg Distance moved (d) = 52 m Power of crane (P) = 10 hp = 10×746 W = 7460 W…

Q: A 2000-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 10.00 m…

A: Given information:Mass of pile drive, mpd=2000 kgInitial distance of the driver(yid)=10+0.3=10.3…

Q: A 4.7 kg block is pushed 3.1 m up a vertical wall with constant speed by a constant force of…

A: Given values: Mass of the block, m=4.7 kg Displacement of the block, d=3.1 m Kinetic friction,…

Q: 22. What is the work required to raise a 350 kg steel beam to a height of 7.50 m? Group of answer…

A:

Q: A smooth 0.165 kg hockey puck slides along a smooth floor at an initial speed of 1.0 m\s, and stops…

A:

Q: A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 5.60 cm. (a) Use work and…

A: Given, Mass of bullet m = 7.80 g = 7.80 x 10-3 Kg Initial velocity u = 500 m/s Distance d = 5.60 cm…

Q: A 30-foot chain hangs over the side of a 50 foot tall building. The chain weighs 90 pounds. Set up,…

A: An external force that is applied in the direction of the displacement at least partially produces…

Q: A typical muscle fiber is 2.0 cmcm long and has a cross-section area of 3.1×10^−9m^2When the muscle…

A:

Q: Consider a 40-foot chain that weighs 5 pounds per foot hanging from a winch 40 feet above ground…

A: To solve the problem, we will write an expression for work done and apply it to the given situation.…

Q: A 287-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 17.1°…

A: The mass m=287 kg The angle θ=17.1° The coefficient of kinetic fraction μk=0.253

Q: what is the work done by the pushing force, in Joules? b) What is the mass of the box, in kilograms?

A:

Q: A tank in the shape of an inverted right circular cone has height 6 meters and radius 4 meters. It…

A:

Q: An electric forklift truck is capable of doing 4.0x 105J of work on a 4.5x 103 -kg load. To what…

A:

Q: A 50 kg block is pulled up by a tensile force a 175 N and pushed up by a force of F=200 N both…

A: We need to find frictional force, work done by friction, tension and the total work done.

Q: How much work is done by gravity when dead lifting a 100.0 kg barbell 81.54 cm from the floor to hip…

A:

Q: ASK YOU A 7.80 g bullet is initially moving at 620 m/s just before it penetrates a block of wood to…

A: Given data: Mass of bullet is, m=7.80 g=7.80×10-3 kg. Initial speed of bullet is, u=620 m/s. Depth…

Q: 10. A tow truck pulls a car by a cable that makes an angle of 30° to the horizontal. The force…

A:

Q: What distance can a crane lift a 55.0 N box, if it expends work of 2.00 x 104 Joules?

A: given ;    force, F = 55.0 N , work done = 2.00 x 104  Joules  formula used;     W = F x d   where,…

Q: How much work is done when you push a crate horizontally with 120 NN across a 11-mm factory floor?…

A: The work done is given by  W  F x d  where, F is the force in the direction of  displacement and d…

Q: 1. A 5kg block is push up a rough, inclined surface by a constant force of 20N. The surface is…

A: We will answer this question by identifying forces on the block through a free body diagram, and…

Q: How much work is done stretching Achilles tendon from rest by 1 cm? Tendon stiffness is 287 500 N/m.

A:

Q: The loaded cab of an elevator has a mass of 2.80 × 10³ kg and moves 212. m up the shaft in 17.0 s at…

A: Power is the rate of doing work, P = W/t     = F.s/t Where,  P = power W = work F = force s =…

Q: 8. A vertical spring is 10.0 cm long when carrying a load of 20.0 kg and 12.0 long when carrying a…

A:

Q: A 5 m rope weighing 0.50 kg per m is hanging from the ceiling. Find the work required to lift the…

A: Length of rope, L=5 m  Mass per unit length=0.50 kg  To determine the work required to lift the…

Q: A 2,000-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 3.00 m…

A: