Two spanners X and Y of lengths 15cm and 20cm respectively are used in turn to give a screw of pitch 2mm one complete rotation. If Rx and Ry are the respective velocity ratios of the spanners then the ratio Rx : Ry is

By: |Published on: Aug 28|Categories: Physics WAEC| 0 comments

A. 1:50
B. 3:20
C. 3:4
D. 4:3
E. 20:3

Correct Answer:

Option C – 3:4

Explanation

Rx = 15/0.2 = 75
Ry = 20/0.2 = 100
Rx : Ry = 75 : 100 = 3 : 4

Users Also Read These:

SEE ALSO  Calculate the time taken to heat 2kg of water from 50°C to 100°C in an electric kettle taking 5A, from a 210V supply. (Specific heat capacity of water = 4200kg−¹K−¹

Copyright warnings! Do not copy.