Question

there is a bell tower at the top of a tower that is 50 m high. the bell weighs 190N. the bell has___ energy. calculate it.​

Answer 1

Answer:

The bell has 8550 J energy. given, There is a bell at the top of a tower

that is 45 m high. The bell weighs 190 N

i.e., bell is located at the top of tower, h = 45m

weight of the bell, F = 190N

work done by the gravitational force = F.cos 180° [ gravitational force (i.e., weight) acting

downward while body is located 45m above the ground. so, angle between force and h = 180°]

work done by the gravitational force = 190 x 45 x (-1)

= -8550 J

we know, potential energy = negative of work done

= -(-8550 J) = 8550 J

Answer 2

Given :

height = 50 m

weight of bell = 190N

To Find :

energy of bell

The bell has an energy of 8550 J.

provided, There is a bell at the summit of a 45-meter-high tower. The bell is 190 N in weight.

i.e., the bell is at the top of the tower, with a height of 45 meters .

F = 190 N is the bell's weight.

F.hcos180° work done by gravitational force

[A downward gravitational force (i.e., weight) operating on a body that is 45 meters above the earth. as a result, the angle between force and h is 180°]

= 190 × 45 × (-1)

-8550 J =

We all know that potential energy equals negative work done.

= -(-8550 J) = 8550 J

Therefore the the bell has 8550 J energy.