Question

Step 1

As a parachute jumps from an airplane, his velocity is increasing. This time, there will be acceleration. Then it attains a constant speed. From this moment onwards, there will be no acceleration. After attaining constant speed, since there is no net force, parachutist is said to be in equilibrium.

Step 2

The force on air drag cannot be zero. If it is zero, parachutist will definitely accelerated and there will be non-zero net force acting on it. Thus, option (a) is incorrect.

There are two forces acting on the parachutist. The weight of parachutist acting vertically downwards and air drag acting vertically upwards. At equilibrium condition, it will balance each other. Thus, option (b) is correct.

Speed and gravitational acceleration (*g*) ...

Tagged in

Q: A long solenoid has 100 turns/cm and carries current i. An electron moves within the solenoid in a c...

A: Magnetic field in the solenoid is given by :

Q: A solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an an...

A: The equation for the moment of inertia of a solid cylinder is given by

Q: What is the magnitude of the force on 2 meters of wire carrying 0.5 A of current at an angle of 37 d...

A: Force on the wire is,

Q: Please show me how to work this. Don't round any figures please.

A: The work done can be calculated using following steps:Given:

Q: Can you produce current from a magnet and vice versa?

A: Michel Faraday’s experiments on a magnet and a loop of wire explained the relation between electrici...

Q: An electric motor has an effective resistance of 33.4 Ω and an inductive reactance of 49.4 Ω when wo...

A: Write the expression for the rms current of a LR circuit.

Q: ESS 2 2 SE 16 s SES-ES ESESESES STA ES STA ES STA ES Arod AB with length L ellism is lying on a rect...

A: (a)Write the expression for total induced emf across the rod AB.

Q: Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 13...

A: Determine the final velocity of the cars after collision and their direction.Determine the loss in k...

Q: Two manned satellites approaching one another at a relative speed of 0.300 m/s intend to dock. The f...

A: Given:

Sorry about that. What wasn’t helpful?