an object of mass 35 kg is raised to a height 4 metre above the ground

1.	an object of mass 35 kg is raised to a height 4 metre above the ground what is the potential energy if the if the object is about to for find its kinetic energy when it is three quarter weight down
Answer» Answer: Answer Given : Mass of the object M=40kg Height upto which it is raised H=5 m Potential ENERGY P.E=Mgh P.E=40×10×5=2000J Let its kinetic energy be E k when it is HALF way down i.e h ′ = 2 h According to conservation of energy, K.E i +P.E i =K.E F +P.E f 0+2000=E k +Mg 2 h ∴ 2000=E k +40×10× 2 5 ⟹E k =1000J

an object of mass 35 kg is raised to a height 4 metre above the ground what is the potential energy if the if the object is about to for find its kinetic energy when it is three quarter weight down

Answer»

Answer:

Answer

Given :

Mass of the object M=40kg

Height upto which it is raised H=5 m

Potential ENERGY P.E=Mgh

P.E=40×10×5=2000J

Let its kinetic energy be E

when it is HALF way down i.e h

′

According to conservation of energy,

K.E

+P.E

=K.E

+P.E

0+2000=E

+Mg

∴ 2000=E

+40×10×

⟹E

=1000J