# science

posted by .

How much work is needed to raise a 110-kg load of bricks 12m above the ground to a building under construction?

According to the law of conservation of energy, the work required equals the change in potential emergy.
To get the increase in potential energy, multiply the weight (M g) by the change in elevation (h). If M is in kg, g is in m/s^2 and h is in meters, the answer will be in Joules.

## Similar Questions

1. ### physics

A skier of mass 70kg is pulled up a slope by a motor-driven cable. The acceleration of gravity is 9.8m/s^2. How much work is required to pull him 60m up a 30.7ยบ slope (frictionless) at a constant speed of 3 m/s?
2. ### Physical Science

How much work is needed to raise a 110-kg load of bricks 12 m above the ground to being under construction?
3. ### physics question

The sum of the emfs and potential difference around a closed loop equals zero" is a consequence of: a) Newton's third law b) Ohm's law c) Newton's second law d) conservation of energy e) conservation of charge For this question: I …
4. ### PHYSICS NEED HELP FAST

A 150KG STEEL ROD IN A BUILDING UNDER CONSTRUCTION SUPPORTS A LOAD OF 6050KG. DURING THE DSY THE RODS TEMP. INCREASES FROM 22C TO 47C CAUSING THE ROD TO THERMAALLY EXPAND AND RAISE THE LOAD 5.5mm. FIND THE EGERHU TRANSFER AS HEAT TO …
5. ### PIs 267

How much work is need to raise a 110 kg loag of bricks 12m above the ground
6. ### science

How much work does it take to raise a 3kg object 5m into the air?
7. ### Science

A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,how much work does he do?
8. ### Physics

A 0.60-kg basketball is dropped out of the window that is 6.1 m above the ground. The ball is caught by a person whose hands are 1.2 m above the ground. (a) How much work is done on the ball by its weight?
9. ### science(physics)

A 2kg stone is droped from the top of a 20m building a)what potential energy does it posses b)At what height does its potential energy become equal to its kinetic energy?
10. ### Physical science

A simple lever is used to lift a heavy load. When a 58-N force pushes one end of the lever down 1.1 m the load rises 0.14 m. How much work is done by the 58-N force?

More Similar Questions