Question

15. Tension in the rope at the rigid support is
(g = 10 m/s2)

(1) 760 N
(3) 1580 N
(2) 1360 N
(4) 1620 N
​

Answer 1

Answer:

Explanation:case 1:

when the man ascends up the rope with acceleration of 2 m/s2.

we have T1 -mg =ma

or T1 = mg +ma

or T = 600 + (60x2 ) = 720 N

in case 2:

when the mans descend by a constant velocity

we have T 2= mg

so T2 = 50 x 10 =500 N

case 3:

when the man descends by 1 m/s2

we have  

mg -T​ = ma

or

T = mg -ma

so T 3= 400-(40x1) = 360 N

so the net tension a the rigid support is = 720+500 +360 = 1580 N

Answer 2

Answer:

Explanation:if it helps you so please reply me