Homework Statement
Tension is maintained in a string as in the
figure. The observed wave speed is 26 m/s
when the suspended mass is 3.2 kg .What is the mass per unit length of
the string? The acceleration of gravity is
9.8 m/s2 . Answer in units of kg/m
The Attempt at a Solution
can...
if i add the perpendicular force the awnser is going to be close to 4000.00N and u said u got a ans between 1000 -2000 . If i subtract the perpendicular force i get 419.9430147 which below ur score that said was tht u got. SO i am confused now
so the force of friction calculation and everything is right. But is the perpendicular force positive or negative. I know that i subtract 118-Ff but do i add the perpendicular force or subtract it. I am confuesd on that part
so if i jus take into acount the force of friction is 20.812327146and subtract it from the force applied which is 118 i get 97.18767285. Then i just multiply it by the distance (24.5m) and i get 2381.097985 .is that rite or still kinda of
for force of friction i got 20.81232745 and normal force as 80.04741329. i jus added up Ff + Fn+F after that i just multiplied Fnet by the distance and got 4342.259603
I tired that, It is telling me that the answer is wrong for the problem as the answer i got 5362.063648J. If u can can u let me know if it was a calculation error
Homework Statement
An 85.8 N box of clothes is pulled 24.5 m up
a 21.1◦ ramp by a force of 118 N that points
along the ramp.
The acceleration of gravity is 9.81 m/s2 .
If the coefficient of kinetic friction between
the box and ramp is 0.26, calculate the change
in the box’s kinetic...
i really still don't get this . First of all the weight cannot be the hypotenuse because it is weaker in value then the force applied which is 119N compared to the 83.6N weight so to me it seems impossible can u please try to explain a little bit more clearly on what I am supposed to do because...
Homework Statement
A 0.40 kg soccer ball approaches a player
horizontally with a velocity of 18 m/s to the
north. The player strikes the ball and causes
it to move in the opposite direction with a
velocity of 24 m/s.
What impulse was delivered to the ball by
the player? Answer in units of kg ·...
i think u misinterpreted the question , It says pulled up so i think the box should be at the bottom and the weight cannot be the sum of the other forces b/c the weight is the hypotenuse but the force is greater then it which cannot be possible since the hypotnuse is the longest side
`i don't think i quite understand the method of drawing so can u please try to explain it more if possible because i don't understand what to do. If possible can you show me a algebraic method
Homework Statement
An 83.6 N box of clothes is pulled 20.1 m up
a 39.5◦ ramp by a force of 119 N that points
along the ramp.
The acceleration of gravity is 9.81 m/s2 .
If the coefficient of kinetic friction between
the box and ramp is 0.23, calculate the change
in the box’s kinetic energy...