An elevator of mass 500 kg is ascending upwards with a constant acceleration a =2 m / s 2. What is the work done by the tension in the elevator cable during its climb by 12 m ? (. Take .g =10 m / s 2)

Question

An elevator of mass 500 kg is ascending upwards with a constant acceleration a =2 m / s 2. What is the work done by the tension in the elevator cable during its climb by 12 m ? (. Take .g =10 m / s 2) (A) 36 kJ (B) 48 kJ (C) 72 kJ (D) 100 kJ

Tardigrade Admin · Accepted Answer

Mass of elevator, m=500 kg Acceleration of elevator, a=2 ms -2 (upward) When elevator is going upward, then tension in the elevator cable, T=m(g+a)=500(10+2)=6000 N ∴ Work done by the tension force in the cable, W=T × s=6000 × 12 [∵ given s=12 m ] =72000 J =72 kJ

Q. An elevator of mass $500 k g$ is ascending upwards with a constant acceleration $a = 2 m / s^{2}$ . What is the work done by the tension in the elevator cable during its climb by $12 m$ ?
$($ Take $g = 10 m / s^{2})$

$36 k J$

$48 k J$

$72 k J$

$100 k J$

Q. An elevator of mass 500kg is ascending upwards with a constant acceleration a=2m/s2. What is the work done by the tension in the elevator cable during its climb by 12m ? ( Take g=10m/s2)

36kJ

48kJ

72kJ

100kJ

Mass of elevator, m=500kg Acceleration of elevator, a=2ms−2 (upward) When elevator is going upward, then tension in the elevator cable, T=m(g+a)=500(10+2)=6000N ∴ Work done by the tension force in the cable, W=T×s=6000×12 [∵ given s=12m] =72000J=72kJ

Q. An elevator of mass $500 k g$ is ascending upwards with a constant acceleration $a = 2 m / s^{2}$ . What is the work done by the tension in the elevator cable during its climb by $12 m$ ?
$($ Take $g = 10 m / s^{2})$

$36 k J$

$48 k J$

$72 k J$

$100 k J$