Ask Experts Questions for FREE Help !
Ask
    NUSAIBA ALIM's Avatar
    NUSAIBA ALIM Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 17, 2014, 07:35 AM
    Physics problems
    A lorry of mass 10000 kg takes 5000 kg of sand to the top of a hill 50 m high,unloads the sand and then returns to the bottom of the hill.
    The gravitational field strength is 10 N / kg. What is the overall gain in potential energy?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
    		  
    #2

    May 19, 2014, 05:43 AM
    The change in gravitational potential energy in a constant gravity field is given by:



    So - how much mass was moved, and how high, from beginning to end of this problem statement? Do the math and post back yuor answer so we can check it for you.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Physics problems [ 1 Answers ]

A car can accelerate from 0 to 50 mph in 2.8 seconds with a top speed of 212 mph. The mass of the car is 2500 kg. Find the minimum power needed to achieve 50 mph.

Physics problems [ 2 Answers ]

How much kinetic energy will the charge have when it has moved through 5 cm in the field, starting from rest?

Where to ask help about physics problems [ 1 Answers ]

Phileas Fogg, the character who went around the world in 80 days, was very fussy about his bathwater temperature. It had to be exactly 38.0 degrees Celsius. You are his butler, and one morning while checking his bath temperature, you notice that it's 42.0 degrees Celsius. You plan to cool the 100.0...

Physics Problems [ 5 Answers ]

1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on the floor. How much work in joules...

View more questions Search