i am doing it like this , when lift is moving downward then , Tension(T) = Mass(m) * Net Acceleration ( Acc. due to gravity(g)+ Lift acceleration(a))tiny-tim said:hi jatin19901! welcome to pf!
apply good ol' Newton's second law to find the relationship between a g and T for the two cases …
what do you get?
jatin1990 said:
…tiny-tim said:no no no no noooo
never do that, there is only one acceleration for one body
in other words: you can put as many forces as you like on the LHS of F = ma, but you can only put one acceleration on the RHS
(of course, you can subtract accelerations of different bodies, to get the relative acceleration of the two bodies, but that's not this case)
g is not an acceleration (on the RHS), mg is a force (on the LHS)
try again!
)oh ok , yes got the answer as A = g/3 , but i don't know whether it is correct or not , can u please check it. One more thing i have some questions to ask , can you please answer them here or do i need to start a another thread?tiny-tim said:you mean? …
in F = ma, the only a on the RHS is the actual acceleration (what you, for some reason, are calling the "net acceleration"
on the LHS, you put all the forces, and that includes the weight, mg
jatin1990 said:
jatin1990 said:
tiny-tim said:uhhh?
how can the tension be in the same direction as the weight??
The tension in the cable of a lift is caused by the weight of the lift and its occupants. As the lift moves up and down, the cable experiences forces that create tension, which helps to support the weight of the lift.
The tension in the cable of a lift is calculated using the equation T = mg + ma, where T is the tension, m is the mass of the lift and its occupants, g is the acceleration due to gravity, and a is the acceleration of the lift. This equation takes into account the weight of the lift and the additional forces that act on it.
Yes, there is a maximum tension that the cable of a lift can handle. The maximum tension is determined by the strength and weight capacity of the cable itself. It is important to ensure that the tension in the cable does not exceed this maximum limit to prevent potential accidents.
The tension in the cable affects the movement of a lift by providing the necessary force to support the weight of the lift and its occupants. As the lift moves up and down, the tension in the cable changes, causing the lift to accelerate or decelerate accordingly.
Yes, changes in temperature can affect the tension in the cable of a lift. As the temperature changes, the cable may expand or contract, which can alter its length and affect the tension. It is important to account for these temperature changes when calculating the tension in the cable to ensure the safety and stability of the lift.