How much work is done by the force of gravity when a 45N object falls to the ground from a height of 4.6m?

Q: How much work does an elevator motor do raising a mass of 1176 kg vertically 15.3 m? I solved this…

A: To raise the mass the elevator motor must work against gravity. From conservation of energy the work…

Q: How much work does gravity do on a 2.5-mg raindrop as the drop falls to the ground from a cloud 2200…

A: Answer              5.39*10-5 J

Q: A body dropped from a height H reaches the ground with a speed of 1:2 VgH. Calculate the work done…

A: Given, height = H             velocity v = 1.2gH           work done W = ?

Q: A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2.00 m above the…

A: Work done on the ball by the air resistance is,

Q: A force of 14 lb is required to hold a spring stretched 4 in. beyond its natural length. How much…

A: force = 14 lb stretch (d) = 4 in

Q: A 1.9 kg book is lying on a 0.75m high table. You pick it up and place it on a bookshelf 2.1 m above…

A:

Q: 1040 kg car is travelling at a velocity of 8.2 m/s.  How much work must be done by the engine to…

A:

Q: The figure below shows a person lifting a box with a mass of 18.9 kg a height of 1.4 m and moving it…

A: First, the person lifts the box up to a height of 1.4 mAnd then moves the box to a distance of 5 m…

Q: Dr. Frankenstein is pushing a loaded Aldi’s cart through a grave- yard collecting parts for his…

A: F=300 Nx=5 mm=85 kgv=0.8 m/s

Q: An elevator of mass 700 kg descends with an acceleration of 3 m/s^2 over a distance of 12 metres.…

A: Given that :Mass of elevator, m=700 kgAcceleration downward, a=3 m/s2Distance, d=12 m

Q: A crane pulls up a car weighing 500kg to a vertical height of 4m. Calculate the work done by the…

A: Work is Calculated by:   Work = Force x Displacement   Work = mgH           ......(1)     ( Here H…

Q: One species of Darwin’s finch, Geospiza magnirostris, can exert a force of 217 N with its beakas it…

A:

Q: A 35-kg box is dragged by a rope a distance of 3m from rest to a speed of 2m/s along a horizontal…

A: Given:Initial velocity of the block, u = 0final velocity of the block, v = 2 m/sangle of rope from…

Q: A small 65g toy rocket is launched straight up from the ground at 120 km/h (a) What is the kinetic…

A: Given The mass of the rocket is m=65 g=65×10-3 kg. The initial velocity of the rocket is v=120…

Q: You carry a 21.0 kg bag of groceries 2.0 m above the level floor at a constant velocity of 71 cm/s…

A: No work is done i.e. work done is 0.

Q: What would be the power output in hp of a 1750 kg car if it can ascend to the top of a 285 m high…

A: Take the bottom of the hill to be at height zero. The potential energy of the car at the bottom of…

Q: 1.6 kg book is lying on a 0.79 m -high table. You pick it up and place it on a bookshelf 2.0 m above…

A:

Q: A tennis player hits a 58.0 g tennis ball so that it goes straight up and reaches a max height of…

A: Given data The mass is m=58 g The height is h=8.09 m The work done by the gravity on the  the ball…

Q: Early one October, you go to a pumpkin patch to select your Halloween pumpkin. You lift the 3.0 kg…

A: Assuming pumpkin is lifted and moved on level ground such that its kinetic energy does not change,…

Q: How much work is done by the gravitational force when a 175 kg pile driver falls 4.0m?

A: Work done by force F in moving object distance d is given by,  W =F.d = F×d×cosθ Where, θ is the…

Q: A 35 kg box is dragged by a rope a distance of 3 m from rest to a speed of 2m/s along a horizontal…

A: Consider the initial speed of box be u, the acceleration of the box be a, the final speed of the box…

Q: A 4-kg object is slowly lifted 1.5 m. How much work is done against gravity? Repeat if the object is…

A: Given dat, Mass of the object = 4 kg Displacement = 1.5 m

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: A truck has a gross weight of 1.0 x 106 N. Assuming that the concrete road has a coefficient of…

A:

Q: basketball playet makes a jump shot. The 0.600 kg ball is released at a height of 2.08m above the…

A:

Q: Estimate the work (in J) you do to mow a lawn 20m by 20m with a 60-cm-wide mower. Assume you push…

A:

Q: A woman jumps from a high wall and lands in soft sand. The sand exerts an average upward force of…

A: Newton's third law of motion states that every force has an equal and opposite reaction to the body.…

Q: A 246.63 kg crate slides 3.08 m until coming to a stop after being pushed by a large man. The…

A:

Q: A 10 kg fruit is released from a 20 m tall jackfruit tree. Jaca's initial velocity is 1 m / s with…

A: mass of fruit (m) = 10 kg Initial velocity (u) = 1 m/s launch angle = 30o above the horizontal…

Q: A person pulls a 10 kg luggage along a level road for 5 m by exerting a force of 20 N at an angle of…

A: