A rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration

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A rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration of 10 m/s². The initial thrust of the blast is

Options

(a) 1.75 x 10⁵ N
(b) 3.5 x 10⁵ N
(c) 7 x 10⁵ N
(d) 14 x 10⁵ N

Correct Answer:

7 x 10⁵ N

Explanation:

Net upthrust = Weight + Blasted force
U = mg + 3.5 × 10⁴ × 10ms⁻²
U = 3⋅5 × 10⁴× 10ms⁻¹ + 3⋅5 × 10⁴ × 10ms⁻²
U = 7⋅0 × 10⁵N.

Related Questions:

1. In which of the following systems will the radius of the first orbit (n=1) be minimum?
2. What is the dimension of impedance?
3. The physical quantity which does not have the same dimensions as the other three is
4. A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane
5. A very small circular loop of radius a is initially (at t=0) coplanar and concentric

Topics: Laws of Motion (103)
Subject: Physics (2479)

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