Aman with mass 70.0 kg stands on a platform withmass 25.0 kg. he pulls on the free end of a rope thatruns over a pulley on the ceiling and has its other end fastened tothe platform. the mass of the rope and the mass of the pulley canbe neglected, and the pulley is frictionless. the rope is verticalon either side of the pulley.
a) with what force does he have to pull so that he and theplatform have an upward acceleration of 1.80\; {\rm m}/{\rm s}^{2}?
b) what is the acceleration of the rope relative to him?

Answer

given,

mass of the man =  70 kg

mass having in it = 25 Kg

acceleration = a = 1.8 m/s²

Equation of motion for the man on the platform

T + n - M g  = Ma   --------(1)

Equation of motion for the platform

T - n - mg = ma----------------(2)

add the above two equations

T = 551 N

Part (b)

acceleration of the rope = - 2 x acceleration of the platform

a_rope = - 2 x 1.80 = - 3.6 m/s²

a_rope' with respect to man is = - 3.6 - 1.8 = -5.4 m/s²

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation