A man is standing on a platform that is connected to a pulley arrangement, as the drawing shows. By pulling upward on the rope with a force the man can raise the platform and himself. The total mass of the man plus the platform is 94.7 kg. What pulling force should the man apply to create an upward acceleration of 1.20 m/s2?
my guess would be using F=m.a and inputing the values you have in. f = 94.7kg / 1.20m/s2 = 78.92n (2dp) is that what you got?
To find the pulling force required, we can use Newton's second law of motion, which states that the force acting on an object is equal to its mass multiplied by its acceleration.
In this scenario, the total mass of the man plus the platform is given as 94.7 kg. The desired upward acceleration is 1.20 m/s². Therefore, we need to calculate the pulling force.
The formula we'll use is:
Force = Mass × Acceleration
Plugging in the given values, we have:
Force = 94.7 kg × 1.20 m/s²
Now, we can calculate the pulling force:
Force = 113.64 N
Hence, the pulling force that the man should apply is 113.64 N.