1 Answers

The pitch of a screw jack is 0.45cm…calculate the mechanical advantage.

Posted by: 1015 views
PHYSICS

The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the efficiency of the jack is 75/π %, calculate the mechanical advantage.

  • A. 400
  • B. 300
  • C. 200
  • D. 150

QUICK ANSWER…

C

EXPLANATION…

Data given:

Pitch of screw jack = P = 0.45cm

The length of arm of the screw jack = L = 60cm

Efficiency = 75/π %

Mechanical advantage = MA = ?

Now, we will use the popular formula which states:

The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the...

Now for the right answer to the above question:

  1. Option A is incorrect.
  2. Option B is incorrect.
  3. C is correct.
  4. D is not the correct answer.

HELPFUL TIPS…

You may please note these/this:

  • The pitch of a screw jack is the height (or distance) through which a jack lifts its load after one complete circle of turning its arm by a mechanic.
  • If a mechanic completely turns a screw jack so that his arm forms one complete cycle, the height to which the load moves up is the pitch.
  • The distance travelled by effort will be the circular distance his arm moved to complete one circle. This is the circumference of the circle formed by his arm. We hope our explanation is clear enough.

Use the questions and answer section to correct, express, and contribute your views.

You can also help share this page with friends.

/culled from 2019 JAMB-UTME physics question 20/

1 Answers

  1. +1 Votes Thumb up 0 Votes Thumb down 0 Votes

    If you have further challenge, feel free to ask us, we will be glad to respond…

    Admin - Feb 14, 2022 | Reply


Answer Question