Advertisements
Advertisements
Question
A truck rolls down a hill with constant acceleration after starting from rest. It travels a distance of 100 m in 10 s. find its acceleration. Find the force acting on it, if its mass is 5 metric tons. (tonne)
Advertisements
Solution
Initial velocity of the truck = 0 ms-1
Distance covered by truck = 100 m
Time taken to cover this distance = 10 s.
We know Distance covered would be S = ut + 1/2 at2.
100 =1/2 Xa X100
a= 2 ms-2.
Mass of truck = 5 metric tons = 5000 kg.
Force acted on truck = mass X acceleration
Force = 5000 X 2 = 10000 N.
APPEARS IN
RELATED QUESTIONS
When a shot is fired from a gun, the gun is recoiled. Explain.
A boy pushes a wall with a force of 10 N towards east. What force is exerted by the wall on the boy?
What is the (a) force of gravity and (b) weight of a block of mass 10.5 kg ? Take g = 10 ms-2 .
State two important characteristics of mass.
Name the device used for measuring weight
A man weigh 800 N at the equator. How does the weight of man change at the following place?
At poles
How is weight affected in the following case, when initially the body is weighed in Delhi with a spring balance?
Body is taken to Moscow.
How is weight affected in the following case, when initially the body is weighed in Delhi with a spring balance?
Body is taken to a high mountain.
Why do objects fall towards the earth?
Can every force produced motion in every type of body?
