find the gravitational potential energy of 2.5kg mass kept at a height od 15 m above the ground. the force of gravity on mass 1kg is 10 N
Answers
Answered by
75
F = mg
On mass 1 kg
10 N = (1 kg) × g
g = 10 m/s²
Potential energy = mgh
= 2.5 kg × 10 m/s² × 15 m
= 375 joules
Gravitational potential energy on mass 2.5 kg is 375 joules
On mass 1 kg
10 N = (1 kg) × g
g = 10 m/s²
Potential energy = mgh
= 2.5 kg × 10 m/s² × 15 m
= 375 joules
Gravitational potential energy on mass 2.5 kg is 375 joules
saka82411:
Is this necessary to find gravity???
We already know that it is a constant equal to 10
g = 9.8 m/s²
Yeah I know .Is it necessary to find it in this question???
“the force of gravity on mass 1kg is 10 N” This statement is mentioned in question only because we should not take g = 9.8 m/s²
Answered by
6
Given : 2.5kg mass kept at a height od 15 m above the ground
the force of gravity on mass 1kg is 10 N
To Find :
Gravitational potential energy
Solution:
F = ma
F = mg when a = g
force of gravity on mass 1kg is 10 N
=> 10 = 1 * g
=> g = 10 m/s²
Gravitational potential energy = mgh
m = 2.5 kg
g = 10 m/s²
h = 15 m
PE = 2.5 x 10 x 15
= 375 J
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