Question

A helicopter weighing 3920N is moving up with constant speed of 4 metre per second the force on the helicopter will be??​

Answer 1

Explanation:

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Answer 2

Answer:

1600 N

Explanation:

In the question,

u = 0m/s

v = 4m/s

Time (t) = 1 sec ( speed is given as 4 metre per second)

From 1st equation,

v = u + at

4 = 0 + a

a = 4m/s² ... (i)

Weight = 3920 N = mg

We know that g = 9.8 m/s²

∴ 3920 = m × 9.8

m = 3920/9.8

m = 400kg ... (ii)

F = ma

From (i) and (ii)

F = 400 × 4

= 1600 N