Question

If the length of simple pendulum is 88.2cm. The value of acceleration due to gravity is 9.8m/s?.
Its time period is:
(a) 0.55
(b) 5s
(c) 4
(d) 3s

Answer 1

Answer :

Length of simple pendulum = 88.2cm

Acc. due to gravity = 9.8m/s²

We have to find time period of simple pendulum$.$

★ Time period of simple pendulum in terms of length of pendulum and acceleration due to gravity is given by

• T = 2π × √(l/g)

T denotes time period

l denotes length

g denotes acc. due to gravity

➤ Conversion :

• 100 cm = 1 m
• 88.2 cm = 88.2/100 = 0.882 m

➤ Calculation :

⭆ T = 2π × √(l/g)

⭆ T = 2(3.14) × √(0.882/9.8)

⭆ T = 6.18 × √0.09

⭆ T = 6.18 × 0.3

⭆ T = 1.85 s

Cheers!