Laws of MotionHard
Question
An 80 kg person is parachuting and is experiencing a downward acceleration of 2.8m / s2. The mass of the parachute is 5kg. The upward force on the open parachute is (Take g = 9.8 m / s2.)
Options
A.595N
B.615N
C.456N
D.925N
Solution
The net upward acceleration is (9.8 - 2.8) = 7m/sec2
Total mass = 80 + 5 = 85kg
So, net upward force is F = 85 × 7 = 595N
Total mass = 80 + 5 = 85kg
So, net upward force is F = 85 × 7 = 595N
Create a free account to view solution
View Solution FreeMore Laws of Motion Questions
A rocket with a lift-off mass 3.5 × 104 kg is blasted upwards with an initial acceleration of 10 m/s2. Then the ini...Five persons A, B, C, D & E are pulling a cart of mass 100 kg on a smooth surface and cart is moving with acceleration 3...Block A of mass m is placed over a wedge B of same mass m . Assuming all surface to be smooth . The displacement of bloc...The force of friction is due to :-...A block is placed on a rough horizontal plane. A time dependent horizontal force F = kt acts on the block. Here k is a p...