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Pls help me solve this physics question​
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Pls help me solve this physics question​

Pls help me solve this physics question​-example-1
User Nirmus
by
5.7k points

2 Answers

2 votes

Answer:

1.4

Step-by-step explanation:

User Dogoku
by
5.3k points
4 votes

Answer:

C. 1.4 m/s

Step-by-step explanation:

Energy is conserved:

Initial energy = final energy

At P, the pendulum has only gravitational potential energy.

At Q, the pendulum has only kinetic energy.

PE = KE

mgh = ½mv²

v = √(2gh)

Given h = 0.1 m:

v = √(2 × 9.8 m/s² × 0.1 m)

v = 1.4 m/s

User Jaakko
by
4.5k points
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