A 20kg mass is to be pulled up a slope inclined at 30^o to the horizontal. If the efficiency of the plane is 75%, the force required to pull the load up the plane is [g = 10ms^-2]

Oyelekeipoola

10 years ago

Thank you cos this site nd idea is realy helpn me may God blz u al

Anela

1 year ago

Eff.= M A/V.R
Eff.=75/100
M.A=?
V.R=1/sin∅
=1/0.5=2

75/100 = M.A/2
CROSS MULTIPLY ✖️

150=100M.A
M.A=150/100
= 1.5

RECALL M.A= L/E
Load= mg= 20×10=200

1.5= 200/E

1.5E=200
E=200/1.5
=133.3.

djayenimoney

4 years ago

@myschool, your formular is wrong.
Velocity ratio for included plant is =1/sintheta.
Not g/sintheta

Destinedtowin

4 years ago

I neglected the gravity given mistakenly

June117

3 years ago

Please aspirant of uniport does uniport have post utme past question or it's still jamb they set questions from