# Physics

"A fish hangs from a spring scale supported from the roof of an elevator. If the elevator has an upward acceleration of 1.2m/s^2 and the scale reads 200N, under what circumstances will the scale read 150N? What will the scale read if the elevator cable breaks?"

There was another part of the question that I had figured out. The true force of gravity on the fish is 1.8*10^2N.

1. 👍
2. 👎
3. 👁
1. F = m a
force down on fish = m g
force up on fish = 200
acceleration up =1.2
so
200 - 9.8 m = 1.2 m
11 m = 200
m = (200/11)

then
150 - 9.8(200/11) = (200/11)a

(200/11) (9.8+a) = 150
9.8+a = 8.25
a = -1.55 downward

well if the cable breaks, a = 9.8 dwon
F - 9.8 m = m (-9.8)
F = 0

1. 👍
2. 👎
2. Thank you for answering both questions! I understand them now.

1. 👍
2. 👎

## Similar Questions

1. ### Physics

A 75.0-kg person stands on a scale in an elevator. What does the scale read (in N) when the elevator is at rest? What does the scale read (in N) when the elevator is climbing at a constant speed of 3.0 m/s? What does the scale

2. ### physics

A spring scale is calibrated from zero to 20. N. The calibrations extend over a length of 0.10 m. (a) What is the elastic potential energy of the spring in the scale when a weight of 5.0 N hangs from it? (b) What is the elastic

3. ### physics

An 800 N man stands on a scale in a motionless elevator. When the elevator begins to move, the scale reads 650 N. Find the magnitude and direction of the elevator's acceleration.

4. ### Physics

A fisherman's scale stretches 3.6 cm when a 2.7-kg fish hangs from it. (A) What is the spring stiffness constant? (B) What will be the amplitude and frequency of vibration if the fish is pulled down 2.5 cm more and released so

1. ### physics

A fish hangs from a spring scale supported from the roof of an elevator. a) if the elevator has an upward acceleration of 1.2 m/s^2 and the scale reads 200 N, what is the true force of gravity on the fish? b) under what

2. ### Physics

As part of a physics experiment, you stand on a bathroom scale in an elevator. Though your normal weight is 690 N, the scale at the moment reads 588 N. (a) Is the acceleration of the elevator upward, downward, or zero? (b)

3. ### physics

A large fish hangs from a spring balance supported from the roof of an elevator. If the elevator has an upward acceleration of 2.85m/s^2 and the balance reads 60.0N , what is the true weight of the fish? Under what circumstances

4. ### physics

Struggling with this problem: A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 848 N. As the elevator starts to move up, the scale reading increases to 968 N, then

1. ### Physics

A 650 N student stands on a scale in an elevator. As the elevator starts to move, the scale reads 780 N. a. Find tha acceleration. b. Is the elevator going up or down?

2. ### physics

A particle that hangs from a spring oscillates with an angular frequency ω. The spring-particle system is suspended from the ceiling of an elevator car and hangs motionless (relative to the elevator car) as the car descends at a

3. ### Physics

A 91 kg man stands on a spring scale in an elevator. Starting from rest, the eleva- tor ascends, attaining its maximum speed of 1.7 m/s in 1.07 s. It travels with this constant speed for the next 5 s, undergoes a uniform negative

4. ### physics

Apparent Weight. A physics student weighing 600 N stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 420 N . A )Find the magnitude of the acceleration of the elevator. B ) Find the direction