Calculate the angular momentum of a particle of mass 5 mg revolving about a circle of radius 60 cm with a speed of 2 km / s

Question

Calculate the angular momentum of a particle of mass 5 mg revolving about a circle of radius 60 cm with a speed of 2 km / s (A) 1 × 10-3 kgm 2 s-1 (B) 4 × 10-3 kgm 2 s-1 (C) 6 × 10-3 kgm 2 s-1 (D) 6 × 10-4 kgm 2 s-1

Tardigrade Admin · Accepted Answer

L =m v r=5 × 10-6 × 2 × 103 × 60 × 10-2 =6 × 10-3 kg m 2 s -1

Q. Calculate the angular momentum of a particle of mass $5 m g$ revolving about a circle of radius $60 c m$ with a speed of $2 km / s$

$1 \times 1 0^{- 3} k g m^{2} s^{- 1}$

$4 \times 1 0^{- 3} k g m^{2} s^{- 1}$

$6 \times 1 0^{- 3} k g m^{2} s^{- 1}$

$6 \times 1 0^{- 4} k g m^{2} s^{- 1}$

$L = m v r = 5 \times 1 0^{- 6} \times 2 \times 1 0^{3} \times 60 \times 1 0^{- 2}$
$= 6 \times 1 0^{- 3} k g m^{2} s^{- 1}$

Q. Calculate the angular momentum of a particle of mass 5mg revolving about a circle of radius 60cm with a speed of 2km/s

1×10−3kgm2s−1

4×10−3kgm2s−1

6×10−3kgm2s−1

6×10−4kgm2s−1