  ToughSTEM  ToughSTEM
A question answer community on a mission
to share Solutions for all STEM major Problems.
Cant find a problem on ToughSTEM?
0

A 3.84 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.6N at an angle theta=23.0degrees above the horizontal, as shown.

1. What is the magnitude of the acceleration of the block when the force is applied?

2. What is the horizontal speed of the block 5.70 seconds after it starts moving?

3. What is the magnitude of the normal force acting on the block when the force F is acting on it?

4. If, instead, the floor has a coefficient of kinetic friction ï¿½k = 0.04, what is the magnitude of the frictional force on the block when the block is moving?

5. What is the magnitude of the acceleration of the block when friction is being considered?   Edit
Added Wed, 30 Mar '16 Comment  Solutions
0

A) Acceleration = (14.6cos23)/3.84 = 3.5 m/s2

B) Speed at 5.70 sec = 3.5*5.70 = 19.95 m/s

C) Normal force = 14.6sin23 = 5.70 N

D) Frictional force = 5.70*0.04 = 0.23 N

E) Acceleration of friction is considered = (14.6cos23-0.23)/3.84 = 3.44 m/s2  Edit
Added Wed, 30 Mar '16 Comment  Close Choose An Image
or
Get image from URL
GO
Close Back
Close
What URL would you like to link?
GO             α
β
γ
δ
ϵ
ε
η
ϑ
λ
μ
π
ρ
σ
τ
φ
ψ
ω
Γ
Δ
Θ
Λ
Π
Σ
Φ
Ω
Copied to Clipboard

to interact with the community. (That's part of how we ensure only good content gets on ToughSTEM)
OR      OR
ToughSTEM is completely free, and its staying that way. Students pay way too much already.
Almost done! Welcome to the Club!
Choose a new Display Name
Only letters, numbers, spaces, dashes, and underscores, are allowed. Can not be blank.
Great! You're all set, . A question answer community on a mission
to share Solutions for all STEM major Problems.
Why
The Purpose
How
The Community
Give Feedback Tell us suggestions, ideas, and any bugs you find. Help make ToughSTEM even better.