a person of mass 60 kg is in the lift .the change in apparent weight of the person ,when the lift moves with an acceleration 2 m/s and down with same acceleration is?
Answers
Answer:
720 N when lift goes up
480 N when lift goes down
Explanation:
Mass of the person m = 60kg
acceleration of the lift a = 2 m/s²
Taking acceleration due to gravity g = 10 m/s²
1) When the lift moves up with an acceleration a then the apparent weight of the person will increase
Apparent weight when lift moves up = m(g+a)
= 60 × (10+2)
= 720 N
1) When the lift moves down with an acceleration a then the apparent weight of the person will decrease
Apparent weight when lift moves up = m(g-a)
= 60 × (10-2)
= 480 N
Answer:
480 N when lift goes down
Explanation:
Mass of the person m = 60kg
acceleration of the lift a = 2 m/s²
Taking acceleration due to gravity g = 10 m/s²
1) When the lift moves up with an acceleration a then the apparent weight of the person will increase
Apparent weight when lift moves up = m(g+a)
= 60 × (10+2)
= 720 N
1) When the lift moves down with an acceleration a then the apparent weight of the person will decrease
Apparent weight when lift moves up = m(g-a)
= 60 × (10-2)
= 480 N