How High Does the Oil Drum Rise on the Sloping Plank?

[Jahnavi]

Homework Statement

A frictionless sloping plank is 6m long .An oil
drum of 300N is raised up the sloping plank by an effort of 15N.Calculate the height to which the oil drum rises .
1) 2m
2) 7m
3) 3m
4) 0.3m

Homework Equations

The Attempt at a Solution

I am not able to interpret the problem correctly.I can do the problem if only I understand the statement given .

Is the sloping plank a fixed inclined plane on which we have to push an object upwards along the slope ?

What is an effort ? Is it a constant applied force?

Why should the height to which object rises be limited ?

Please help me understand the problem statement .

 

[CWatters]

Is the sloping plank a fixed inclined plane on which we have to push an object upwards along the slope ?

Yes

What is an effort ? Is it a constant applied force?

Yes the units are given as Newton's.

Why should the height to which object rises be limited ?

It's limited by the length of the plank, the angle and available force.

 

[Jahnavi]

That means angle of plank θ = sin^-1(1/20) and option 4) is correct ?

 

[haruspex]

That means angle of plank θ = sin^-1(1/20) and option 4) is correct ?

Yes.