Question

A block of iron with dimensions 12 cm x 8 cm x 10 cm and a mass of 7.5 kg is kept on a table top on its base of side 12 cm x 8 cm. Calculate: Thrust

a) 75 N
b) 80 N
c) 85 N
d) 90 N

Answer 1

The thrust exerted by the iron block on the tabletop is calculated by multiplying the block's mass by the gravitational acceleration. The exact value is 73.575 N, which suggests the closest answer would be (a) 75 N.

Step-by-step explanation:

The question is asking to calculate the thrust exerted by a block of iron on a tabletop. Thrust is the force exerted by the block on the surface due to gravity and is calculated using the formula: Thrust (N) = Mass (kg) × Gravitational acceleration (9.81 m/s2). In this case, the mass of the block is 7.5 kg. Multiplying the mass by the gravitational acceleration, we get: Thrust = 7.5 kg × 9.81 m/s2 = 73.575 N. While this number is not among the options provided, it is closest to option (a) 75 N, so this could be the intended answer if we accounted for slight rounding differences in gravitational acceleration.