Question

answer fast pleaseeee​

Answer 1

According to the statement,

★ Condition first!

→ Mass of body = 10 kg

→ Height = 20 m

→ g = 9.8 m/s sq.

★ Condition second!

→ Mass of body = 10 kg

→ Height = 5 m

→ g = 9.8 m/s sq.

• We have to find out the potential energy according to condition second!

To calculate:

• Potential energy

Solution:

• Potential energy = 490 J

Using concept:

• Potential energy formula

Using formula:

• E_p = mgh

Where, E_p denotes potential energy, m denotes mass, g denotes acceleration due to gravity and h denotes height.

Required solution:

→ E_p = mgh

→ E_p = 10(9.8)(5)

→ E_p = 98(5)

→ E_p = 490 J

• Therefore, potential energy is 490 Joules. Henceforth, option (a) is correct. $\:$