Answer:
Work done, W = 39.2 J
Explanation:
It is given that,
Mass of the block, m = 2 kg
The block is lifted vertically 2 m by the man i.e the distance covered by the block is, h = 2 m. The man is doing work against the gravity. It is given by :
Where
g is acceleration due to gravity
W = 39.2 J
So, the work done by the man is 39.2 J. Hence, this is the required solution.
Answer:
ω₂ = 5.578 rads⁻¹
Explanation:
The moment of inertia of,
turn table =
block =
By the law of conservation of angular momentum, as no external torque acts on system the total angular momentum of the system when block sits at center and when block at the outer edge must be same.
Also to find ω, ω = 2πf where f is rpm
= 2π×63/60 = 6.597
So
I₁ω₁ = I₂ω₂
( + )×6.597 = ( + )×ω₂
ω₂ = 5.578 rads⁻¹
Answer:
The value is
Explanation:
From the question we are told that
The weight of the person is
The dosage of the drug is
Given that
=>
=>
Is a conductor of the heat. Hope this helps!
The normal acceleration in the United States is zero to sixty time. The average rate on ordinary cars was between 3 and 4 m/s2